Selling Tickets to the "Enemy"?

This has been eating at me since Saturday night. When I got to my regular seats for the Nebraska game there was someone sitting in my seat. I'm a season ticket holder, have been since 2003. I've been in Section 24C, Row 20, Seats 11 and 12 for about 5 seasons now. I know where my seats are drunk or sober. The people sitting in my seats were Cornshucker fans, so I gave them the benefit of the doubt. I made sure they had the right section, row, etc... They were off one seat. The 6 seats in the area have the permanent seat backs attached, so honest mistake. I also know the four seats they were sitting in were season ticket holder seats. I started thinking what kind of season ticket holder doesn't come to one of the marquee games of the season? And if you can not come WHY IN THE HELL WOULD YOU GIVE/SELL YOUR TICKETS TO FANS OF THE OTHER TEAM? It was a family of four with two young boys, not unlike my own family. They were enjoying themselves and were very nice. I was more upset with the Buckeye "fan" that allowed them these seats. I know, I know, it's a free country you can do what you want with your tickets. I get it. But this is a B1G team coming in at night and we need all the support we can muster. Why would you lessen the noise factor by 4 people. I would never sell my own tickets to anyone other than a Buckeye. It didn't matter at the end, because we won. I would have been livid if we lost. I guess my point is this. If you have tickets to a game and need to sell your tickets please exhaust every option you have before selling to "the enemy". If the AACC game rolls around and I have to sit next to a fan of the Skunk Bears I'll probably be thrown out of the stadium and arrested. To top it all off the husband did not stand during the National Anthem. Don't get me started on that topic! Thanks for letting me get this off my chest.